The EcoBoost is Dead...

[GoDadGo]

Here's an Off-Beat suggestion that would require a good bit of fabrication work but would likely save you a ton of money in the end.
Put a GM front wheel drive in an 818 sitting side saddle.
A North Star or Supercharged Buicks are quite pleantiful, especially in South Florida near Boca. (Search The 33331 Zip Code)
I know you won't have a manual transmission option, but a super low mileage Seville, Deville, DTS, Buick LeSabre and/or Park Avenues can be had for a song down there and none were ever dogged.
Yes, I'm Nuts Hense The Dark Side 383 Chevy Cobra With ZF 6-Speed, But The Cadi Coughs Up 275-Plus HP & A V/8 Would Sound Sooooo Sweeeeeeeet!